CDC Labs Were Contaminated, Delaying Coronavirus Testing, Officials Say

Sloppy laboratory practices at the Centers for Disease Control and Prevention caused contamination that rendered the nation's first coronavirus tests ineffective, federal officials confirmed Saturday.Two of the three CDC laboratories in Atlanta that created the coronavirus test kits violated their own manufacturing standards, resulting in the agency sending tests that did not work to nearly all of the 100 state and local public health labs, according to the Food and Drug Administration.Early on,